1) Biological process 2) Organic process 3) The process of tumefying 1) Expansion 
A plant tumor or gall. 
• (n.) The act or process of tumefying, swelling, or rising into a tumor; a swelling.
1. A swelling. ... Synonym: tumentia. ... Synonym: tumescence. ... Origin: see tumefacient ... (05 Mar 2000) ... 
(too″mә-fak´shәn) swelling.
A term used for abnormal tissue formations in insects and other invertebrates which have characteristics in common with vertebrate neoplasms but whose precise nature is unknown.
Type: Term Pronunciation: tū′mĕ-fak′shŭn Definitions: 1. A swelling. Synonyms: tumescence, tumentia
[n] - the process of tumefying
noun the process of tumefying; the organic process whereby tissue becomes swollen by the accumulation of fluid within it
an act of making or becoming swollen or tumid.